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From: "Ken'ichi Ohmichi" <oomichi@mxs.nes.nec.co.jp>
To: Bernhard Walle <bwalle@suse.de>
Cc: kexec@lists.infradead.org
Subject: Re: [PATCH] [makedumpfile] Fix problem with `half' pages
Date: Wed, 23 May 2007 21:38:56 +0900	[thread overview]
Message-ID: <20070523213856oomichi@mail.jp.nec.com> (raw)
In-Reply-To: <20070518105003.GE16227@suse.de>


Hi Bernhard,

2007/05/18 12:50:04 +0200, Bernhard Walle <bwalle@suse.de> wrote:
>We have a system here with following memory map:
>
>/proc/iomem:
>4ffe14000-4ffe7ffff : reserved
>4ffe80000-4fffb5fff : System RAM
>4fffb6000-4ffffffff : reserved
>
>max_pfn = 1310720
>
>In that case, the last page of the "System RAM" is not full in 16K page size
>configuration. That leads to an error in makedumpfile when it checks if that's
>a zero page. It's because it tries to read the whole page and the read()
>fails because it's after the end of the dump file.
>
>That patch fixes this problem.

Thank you for the patch.
I guess there are the other problems because makedumpfile should not access
incomplete page.
To confirm the problem, I'd like to see the makedumpfile log with -D option.
Could you send it ?


Thanks
Ken'ichi Ohmichi

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      reply	other threads:[~2007-05-23 12:38 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-05-18 10:50 [PATCH] [makedumpfile] Fix problem with `half' pages Bernhard Walle
2007-05-23 12:38 ` Ken'ichi Ohmichi [this message]

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